Behavior of imaginary rate-independent linear damping incorporated into a building structure subjected to strong ground motions is *** is well known that linear viscous damping and rate-independent linear damping yiel...
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Behavior of imaginary rate-independent linear damping incorporated into a building structure subjected to strong ground motions is *** is well known that linear viscous damping and rate-independent linear damping yield almost identical response displacements and velocities during *** the response central frequency is close to the fundamental frequency of the structure, the two linear damping elements yield almost identical damping forces;these two damping elements yield, however, substantially different damping forces, thereby resulting in substantially different floor response accelerations when the average response frequency and the fundamental frequency differ *** benefit of rate-independent linear damping incorporated into a long-period structure is that it yields relatively low floor response accelerations even if the structure is subjected to a ground motion containing high-frequency components, whereas linear viscous damped structures might suffer high accelerations induced by high damping forces generated by high-frequency components of the ground ***, adding damping to a structure reduces response displacement at the expense of floor response *** of rate-independent linear damping in a long-period structure is expected to be effective for controlling response displacements without increasing floor response accelerations when the structure is subjected to a ground motion containing high-frequency components.
In view of the deficiencies of current research on pipeline structure monitoring, especially the monitoring and detection of components fail, a model method for pipeline early fault detection based on Fiber Bragg Grat...
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In view of the deficiencies of current research on pipeline structure monitoring, especially the monitoring and detection of components fail, a model method for pipeline early fault detection based on Fiber Bragg Grating (FBG) sensors is *** the research progress is introduced about the application of optical fiber sensing technology in pipeline monitoring, and the performance and the characteristics of different types of optical fiber sensors is *** a model method is proposed based on FBG *** acquisition system input and output data that contains model parameters which can reflect the structural abnormalities, and parameter identification, the method can realize the monitoring of structure parameters with clear physical *** comparing the actual model parameters to the reference model parameters, the current health characteristics of the system can be *** method provides effective early fault detection capability.A heating pipeline model was *** system accurately recorded the data representing the pipeline actual *** results show that monitoring system can detects real-time changes in the key parts of pipeline and possible failures, providing the basis for the safe operation and fault diagnosis of the *** term monitoring data can also be used for the integral safety assessment and cumulative damage analysis of pipeline.
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